[Resource] What is the Keto Flu and How to Remedy It? (23 min): It’s caused by carbohydrate restriction. And a big reason for that is sodium is flushed out with water weight loss. Drink lots of water with a pinch of salt. In addition to extra sodium (salt), also supplement with magnesium and potassium. Eat more fat, especially MCTs. Also make sleep a top priority. This one is worth the read if you’re going through the flu.